试验性增强法与常规增强法在肝脏磁共振扰相梯度回波序列动态增强扫描中的对比研究

Comparison of Test-injection Method and Fixed-time Method for Liver Using Dynamic Spoiled Gradient Recalled Echo Magnetic Resonance Imaging

目的比较试验性增强法与常规增强法在肝脏磁共振扰相梯度回波(SPGR)序列动态增强扫描中的应用,探讨试验性增强法在肝脏磁共振动态增强中的应用价值。方法将212例患者分成2组。A组109例,接受常规方法行磁共振动态增强;B组103例,接受试验性增强方法行磁共振动态增强检查。比较、分析两组增强结果。结果A组60例(55.0%)获得最佳肝动脉期图像,B组88例(85.4%)获得最佳肝动脉期图像。2肝动脉期图像质量优良率比较,差异有统计学意义(P<0.05)。结论试验性增强法肝脏磁共振SPGR序列动态增强扫描对于肝脏动脉期的显示优于常规磁共振动态增强检查法。

Objective The purpose of this study was to identify the usefulness of the test-injection method as compared with the fixed-time method in dynamic magnetic resonance（MR）imaging of liver. Methods Two hundred twelve patients have been studied that underwent dynamic spoiled gradient recalled echo（SPGR）magnetic resonance imaging. 109 patients （group A）accepted the fixed-time method, 103 patients （group B）accepted the test-injection method. The adequacy of the HAP was evaluated. Results In group A,60 cases（55.0%）were obtained at the optimal HAP;the percentage in group B was 88 cases（85.4%）. This difference was statistically significant（P〈0.05）. Conclusion The SPGR dynamic MR imaging using the test-injection method resulted in better the optimal HAP than the SPGR using the fixed-time method.